<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>promise 回调函数[异步执行]实现</title>
    <script src="./Promise.js"></script>
</head>
<body>
    <script>
        let p1 = new Promise((resolve,reject)=> {
            resolve('ok');
            console.log(111);  // 1
        })

        p1.then(value => {
            console.log('222');  // 3
        })

        console.log('333')  // 2
    </script>
</body>
</html>